A millionaire IT expert has been been charged with murder after he was arrested in South Africa following the deaths of his wife and two children at their £1.3million Bedfordshire home.Ndodana Mkhanyisi Tshuma, 45, was arrested in South Africa after the bodies of Nothabo Zandile Tshuma, 42, Natalie, 15, and five-year-old Nala were found at a house in Great Denham, Bedfordshire, on Tuesday.Today a South African Police Service (SAPS) spokeswoman said Tshuma, who also goes by the name Mark, had been arrested by the force's organised crime unit and Interpol in Kensington, Johannesburg.A police source in Bulawayo confirmed his arrest in South Africa, saying: 'This has been a very fast-moving investigation and we have been working closely with our counterparts here and in South Africa to find him.'There were lots of reported sightings of him and we had people across both sides of the border looking for this man. We are grateful for everybody's hard work.'The SAPS spokeswoman said: 'South Africa is not a hiding place for fugitives.'She added Tshuma, a British citizen of Zimbabwean descent, was believed to have left the UK from Heathrow Airport on a British passport on Saturday.A Crown Prosecution Service spokeswoman said tonight it had 'authorised three charges of murder against Ndodana Mkhanyisi Tshuma following the deaths of his wife and two daughters'. Nothabo Zandile Tshuma, 42, known as Zandile, and her daughters Nala, five, and Natalie, 15, were found dead at a house in Bedfordshire Ndodana Mkhanyisi Tshuma has been arrested in South Africa after being seen on CCTV at Heathrow on Saturday while fleeing the UKThe suspected murder at the house in Carnoustie Drive, Great Denham, near Bedford, prompted an international manhunt. Pictured: Police at the address on TuesdayShe added: 'As criminal proceedings are active, nothing should be reported, commented on or shared online that could prejudice the defendant’s right to a fair trial.' Bedfordshire Police said work had begun to return Tshuma to the UK after his arrest - he is believed still to be in South African custody.He earned a £100,000 as an IT expert and sent his children to private schools: Natalie was at the £20,000-a-year Bedford Girls School while Nala attended Pilgrims Pre-Preparatory School.Detective Inspector Lee Martin, the senior investigating officer, said: 'This has been a fast-moving investigation which has involved multiple law enforcement partners, including the National Crime Agency, Interpol and authorities in both Zimbabwe and South Africa.'Thanks to the tireless work and dedication of all those involved, we have managed to swiftly locate and arrest Ndodana Mkhanyisi Tshuma, who we want to speak to in connection with this shocking and tragic case.'Our investigation remains ongoing and we'll be working closely with our counterparts in South Africa, as well as the National Crime Agency and the Crown Prosecution Service, to bring him back to this country.'Our thoughts remain very much with Zandile, Natalie and Nala, as well as their loved ones, at this time.'On Tuesday a woman who was among those laying flowers outside the family home said: 'We're really sorry to lose her. She's was such a gracious mother.'Another resident, who did not wish to be named, said there was surprise the incident had taken place in 'such a nice and safe area'.In a statement issued by police, a relative of the family described their 'unimaginable loss'.They said: 'The Khumalo family is deeply saddened to confirm the passing of our beloved Zandile (Nothabo) Khumalo and her two children.'During this time of unimaginable loss, we wish to express our heartfelt gratitude to everyone who has reached out with prayers, messages of comfort, and support.'Your kindness and compassion have brought great strength to our family.' Tshuma earned £100,000-a-year as a senior IT manager and drove a BMWGemma Gibson, Headmistress of Bedford Girls' School, said of 15-year-old Natalie that she was 'a bright and accomplished Year 10 student who was dearly loved by everyone at Bedford Girls' School'.Mrs Gibson added Natalie 'was a talented dancer, musician and keen sportswoman'. 'She was fun loving, full of life and had a positive impact on everyone she came into contact with; she will be remembered with warmth and affection. 'Her tragic death, together with that of her loving mother and younger sister, who were also well known to many of us, is a hugely devastating shock to all at Bedford Girls' School and the wider Harpur Trust group of schools. 'Our thoughts and prayers are with Natalie's wider family, friends and all of those impacted by this terrible news.'Headteacher Jo Webster, of Pilgrims Pre Prep School, added of Nala: 'Nala was a much-loved member of our school community who brought joy to those around her every day. Many of our staff had known her since she was seven months old and had the privilege of watching her grow. 'Known for her inquisitive and bubbly nature, positivity and wonderful sense of humour, she was a little ray of sunshine. Whether wearing one of her favourite colourful hair accessories, making those around her laugh or taking centre stage in our Pre-School Nativity, Nala brought warmth and happiness wherever she went. 'She had an extraordinary impact on our community and will be remembered with enormous love and affection. Our thoughts and deepest condolences are with Nala's family, friends and everyone affected by this heart-breaking loss.'Bedfordshire Police previously described its investigation as 'incredibly complex' as tributes were left outside the house on WednesdayZandile was a high achieving director specialising in financial crime, fraud investigations and anti-money laundering.She previously worked in global banking and consulting for companies including Barclays and KPMG and was vice chair of the Female Fraud Forum.Having attended Midlands State University in Gweru, Zimbabwe, she later worked in Tanzania before the couple moved to Bedford in 2011.Tshuma studied Management Information Systems at Solusi University in Zimbabwe before completing his Bachelor of Sciences degree in Plymouth.He later studied for a diploma in Business Systems Analysis and Design at City St George's, University of London, describing himself as a 'results oriented and energetic IT leader'.